BULLDOG 10,000 lbs. support capacity square jacks "fills the gap" between 8,000 lbs. and 12,000 lbs. square jack product offerings. If the existing 8,000 lbs. support capacity square jacks are too small or the 12,000 lbs. support capacity square jacks are too big, look no further - your application and pricing requirements have been met! This is the highest quality and best ...